Small electric fan



FIG. 1 is a three-quarter front perspective view of the ornamental design for an electric fan;

FIG. 2 shows a full front view of the ornamental design of the fan;

FIG. 3 shows a top view of the ornamental design of the fan;

FIG. 4 shows a left side view of the ornamental design of the fan;

FIG. 5 shows a right side view of the ornamental design of the fan;

FIG. 6 shows a full rear view of the ornamental design of the fan; and,

FIG. 7 shows a bottom view of the ornamental design of the fan. 

The ornamental design for a small electric fan, as shown. 